Paper folding control guide



Nov. 10, 1931. H. A. w. WOOD PAPER FOLDING CONTROL GUIDE ori ihal Filed Nov 21-, 1928 2 Sheets-Sheet l Patented Nov. 10, 1931 UNITED STA T-Es PATENT OFFICE y.

HENRY A. wrsn woon, or NEW YORK, 1v. Y., ssrenorc TO woonynnwsrarnn MA- 1 CHINERY oonrormrrrou, on NEW YORK, N. Y., A ooarom'rron or VIRGINIA PAPER FOLDING CONTROL GUIDE Application filed NovemberQl, 1928, Serial No. 320,775. Renewed a ririe, 1931.

This invention relates to the folding couple of-a folder, particularly a newspaper folder,

and the principal objects thereof are to providetexternal means for holding the forward edge of the sheets to be folded up against the folding cylinder at the moment when the pins are being withdrawn and this edge of the sheet is starting to move back down between the folding rolls; to provide means for controlling the thickness of the leading edge of the paper at the moment above specified and to provide a shield for this purpose.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which Fig. 1 is a sectional View of the foldmg couple constructed as usual with a preferred embodiment of this invention applied thereto- Fig. 2 is a side view of the same;

Fig. 3 is a view like Fig. 1 showing the position of the parts when the pins have been fully withdrawn;

Fig. 4 is a View similar to Fig. 1 showing a modified construction; 7

Fig. 5 is a similar view showing another modification, and v Fig. 6 is a plan of the additional feature in this form.

The pins which are employed in the folding of a newspaper to carry the advance edge of the several sheets on the folding cylinder are withdrawn from the paper when the middle of the paper is being tucked into the folding rolls by means of the folding blade. The point of withdrawal of these pins controls, to a large extent, the manner inwhich the paper is folded. This point can be adjusted by the setting of-the pin cams which control the action of these pinsbut that setting is a very disagreeable one, largely because a paper as folded consists of a great many sheets and the withdrawal of the pins through the several thicknesses of paper takes an appreciable amount of time. This period varies with the thickness of the paper being run, the number of sheets constituting the paper and the speed of the press. The edges of the several sheets sometimes sepaploye'd in the usual 13 to fold the sheet between them,

l3 isacting to commence the fold and thus draw thepapers back,-on the left hand side.

rate from each other varying distances at this sheets are likely to fly off at a time and point prior to that desired and this causes much annoyance. In order to remedy this condition I have provided means whereby I can control the thickness of the leading edge of the signature of papers at the moment when the pins are withdrawn therefrom or, in other words, Ihold down the outside sheets so that the distance fromthe inside to the outside sheet is always the same. 1

Referring now to Figs. 1,2 and 3 of the drawings, it will be seen that the invention is applied to the usual folding cylinder 10 and cutting cylinder 11, constituting the folding couple, and that the folding rolls 12 are emplace for the folding blade The impaling pins 15 are operated inthe usual way or in any desired way and need not be described in detail. At the end of the sheet at the point indicated at the right,the

cutting blade 16 ofthe cutting cylinder cuts off the forward sheets and the cylinders rotate continuously. When these impaling pins come to the point on the opposite'si'de v the new impaling pins enter the sheets.

At this time it will be seen that the blade In order to prevent these papers flying off the pins 15 at this time and thus interfering with the operation, I place a shield 17 mounted on brackets 18, adjacent the folding cylinder at the point where the pins 15 are withdrawn. This shield is provided with slots 19 through which the pins project beyond the paper. The shield is provided with a concave surface opposite the cylinder which engages the sheets and holds them down against the cylinder and keeps thethickness of the entire pile of sheets at its minimum at that point. This prevents the sheets separating, secures uniform action every time and prevents the loss of control of the outside sheetuntil the pins are entirely withdrawn.

After the pins are withdrawn the parts assume the position shown in Fig. 3 and even then, after the pins are entirely out, the papers are fully controlled by this shield until they have drawn back down below its operative surface. This accomplishes the objects above mentioned.

In Fig. dis shown a brush 20 for accomplishing the same object. Its operation will be fully understood.

In Figs. 5 and 6 a revolving roller 21 is employed for this purpose instead of the curved shield. Said roller is provided with circumferential grooves 22 for receiving the pins which will project from the folding cylinder. It may be driven by any suitable gearing from the folding machine.

In all the forms shown the papers are held back against the folding cylinder at the instant when the pins are being withdrawn and there is no danger of their flying off and causing trouble of any kind.

6. The combination with a folding cylinder and its impaling pins, of a brush located against the cylinder for holding the sheets against the cylinder when the pins are withdrawn.

7. The combination with a folding cylinder and its impaling pins, of a rotary roller having grooves for receiving the pins and located adjarent to the surface of the cylinder to hold the sheets down against it when the pins are Withdrawn.

8. The combination with a folding cylinder and its impaling pins, of a brush located against the cylinder for holding the sheets against the cylinder when the pins are withdrawn.

9. The combination with a folding cylinder and its impaling pins, of a rotary roller having grooves for receiving the pins and located adjacent to the surface of the cylinder to hold the sheets down against it when the pins are withdrawn.

In testimony whereof I' have hereunto affixed my signature.

HENRY A. WISE WOOD.

Although I have illustrated and described only three forms of the invention I am aware of the fact that other modificationscan be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited tothe details of construction shown, but what I do claim 1. The combination with a folding couple,

of means for holding the advance edges of the sheets against the folding cylinder when the pins are being withdrawn. 7

2. The combination with a folding cylinder, its folding rolls and impaling pins, of means outside the cylinder for holding the advance edges of the sheets ata given distance from he cylinder at the instant when the pins are being withdrawn therefrom. r

3. The combination with a folding cylinder and its impaling pins, of means adjacent to the cylinder for keeping the outside sheets on the cylinder from moving away from the pins while they are being withdrawn from the inside sheets.

I. The combination with a folding cylinder and its impaling pins, of a shield located adjacent to the cylinder andto the point thereof at which the pins are withdrawn, for keeping the pile of sheets on the cylinder to a minimum thickness.

5. The combination with a folding cylinder and its impaling pins, of a shield having a concave surface adjacent to the cylinder and slots therethrough for receiving the points of the pins, for the purpose described. 

